内置转换器和过流保护的微特步进电机驱动芯片

HR4985是一种便于使用的内部集成了译码器的微特步进电机驱动器。其设计为能使双极步进电机以全、半、1/4和1/8步进模式工作。步进模式由逻辑输入MSx选择。输出驱动能力达到35V和±1A。HR4985包含一个工作在慢衰或混合衰减模式的固定关闭时间的电流调节器。\n\n译码器是HR4985易于实施的关键。通过STEP简单的输入一个脉冲就可以使电机完成一次步进，省去了相序表，高频控制线及复杂的编程接口。这使其更适于在没有复杂的微处理器或微处理器负担过重的场合。\n\n在步进操作期间，HR4985的内部电路可以自动的控制其PWM操作工作在快、慢及混合衰减模式。在混合衰减模式下，器件初始经过一段时间 • 低导通电阻RDS(ON)\r\n\r\n• 自动检测并选择电流衰减模式\r\n\r\n• 支持满衰减和混合衰减模式\r\n\r\n• 降低功耗的同步整流功能\r\n\r\n• 内部欠压锁定\r\n\r\n• 过流保护\r\n\r\n• 兼容3.3V和5V的逻辑电平\r\n\r\n• 过热关断电流\r\n\r\n• 对地短路保护\r\n\r\n• 负载短路保护\r\n\r\n• 低电流睡眠模式，＜10uA;

Heroic

禾润

Micro-stepping motor driver chip with built-in converter and overcurrent protection

文件：130.97 Kbytes 页数：3 Pages

HEROIC

禾润

Silicon NPN Epitaxial Type (PCT Process) Silicon PNP Epitaxial Type (PCT Process)

Switching, Inverter Circuit, Interface Circuit and Driver Circuit ● AEC-Q101 Qualified (Note1) ● Including two devices in US6 (ultra super mini type with 6 leads) ● With built-in bias resistors ● Simplify circuit design ● Reduce a quantity of parts and manufacturing process and miniaturize eq

文件：152.77 Kbytes 页数：6 Pages

TOSHIBA

东芝

2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins

Description The TS4985 has been designed for top-class stereo audio applications. Thanks to its compact and power-dissipation efficient flip-chip package, it suits various applications. With a BTL configuration, this audio power amplifier is capable of delivering 1.2W per channel of continuo

文件：1.79838 Mbytes 页数：29 Pages

STMICROELECTRONICS

意法半导体

2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins

Description The TS4985 has been designed for top-class stereo audio applications. Thanks to its compact and power-dissipation efficient flip-chip package, it suits various applications. With a BTL configuration, this audio power amplifier is capable of delivering 1.2W per channel of continuo

文件：1.79838 Mbytes 页数：29 Pages

STMICROELECTRONICS

意法半导体